/*
 * Copyright 2009-2010 Andreas Veithen
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.code.jahath.gateway.ssh;

import java.util.Dictionary;

import org.osgi.framework.BundleContext;
import org.osgi.service.cm.ConfigurationException;

import com.google.code.jahath.common.osgi.SimpleManagedServiceFactory;
import com.jcraft.jsch.HostKeyRepository;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;

public class HostKeyRepositoryFactory extends SimpleManagedServiceFactory {
    public HostKeyRepositoryFactory(BundleContext bundleContext) {
        super(bundleContext);
    }

    @Override
    protected void configure(Instance instance, Dictionary properties) throws ConfigurationException {
        String file = (String)properties.get("file");
        JSch jsch = new JSch();
        try {
            jsch.setKnownHosts(file);
        } catch (JSchException ex) {
            throw new ConfigurationException("file", "Unable to load known hosts file", ex);
        }
        instance.registerService(HostKeyRepository.class.getName(), jsch.getHostKeyRepository(), null);
    }
}
